Bacula-users

[Bacula-users] Block checksum mismatch error

2009-12-18 07:01:47
Subject: [Bacula-users] Block checksum mismatch error
From: "Oliver Lehmann" <lehmann AT ans-netz DOT de>
To: bacula-users AT lists.sourceforge DOT net
Date: Fri, 18 Dec 2009 12:31:41 +0100
Hi, 

I had a "situation" today where I needed to recover my /boot directory.
Not bad that I have backups I thought. But then I got a restore error. I 
already restored from time to time stuff with bacula and never got this 
kind of error.
I neither have bad RAM, nor is my CPU overclocked. The error is 
reproduceable and stops at the same position everytime.
I'm backing up to an external USB2 harddisk so It cannot be related to
a "bad tape". But I wonder why I'm getting this error and why I got no 
"backup failed" message in the first place. I mean - how can I now rely
on my backups in the future? Can I make the backup more bullet prove? I
doubt that the files where corrupted later so imho this must have happend
when the backup was created?! 


18-Dec 11:40 backup-dir JobId 6150: Start Restore Job 
client-nudel-files-r.2009-12-18_11.40.22_10
18-Dec 11:40 backup-dir JobId 6150: Using Device "FileStorage"
18-Dec 11:40 backup-sd JobId 6150: Ready to read from volume "Full-0001" on 
device "FileStorage" (/mnt/backup).
18-Dec 11:40 backup-sd JobId 6150: Forward spacing Volume "Full-0001" to 
file:block 0:3792627022.
18-Dec 11:40 backup-sd JobId 6150: Error: block.c:318 Volume data error at 
0:3798755661!
Block checksum mismatch in block=95 len=64512: calc=358ab9fd blk=d0ab37a2
18-Dec 11:40 backup-sd JobId 6150: Fatal error: fd_cmds.c:168 Command error 
with FD, hanging up.
18-Dec 11:40 backup-dir JobId 6150: Error: Bacula backup-dir 3.0.3 
(18Oct09): 18-Dec-2009 11:40:35
  Build OS:               i386-portbld-freebsd8.0 freebsd 8.0-RC1
  JobId:                  6150
  Job:                    client-nudel-files-r.2009-12-18_11.40.22_10
  Restore Client:         nudel-fd
  Start time:             18-Dec-2009 11:40:24
  End time:               18-Dec-2009 11:40:35
  Files Expected:         2,470
  Files Restored:         1
  Bytes Restored:         0
  Rate:                   0.0 KB/s
  FD Errors:              0
  FD termination status:  OK
  SD termination status:  Error
  Termination:            *** Restore Error *** 

18-Dec 11:40 backup-dir JobId 6150: Begin pruning Jobs.
18-Dec 11:40 backup-dir JobId 6150: No Jobs found to prune.
18-Dec 11:40 backup-dir JobId 6150: Begin pruning Files.
18-Dec 11:40 backup-dir JobId 6150: No Files found to prune.
18-Dec 11:40 backup-dir JobId 6150: End auto prune.

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